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Table 1 Demographic and professional characteristics of responders

From: Methodological steps used by authors of systematic reviews and meta-analyses of clinical trials: a cross-sectional study

CharacteristicsNumber (%)
Age (mean ± SD), n = 36044.0 ± 11.6
Men, n = 384258 (67.2)
European, n = 379192 (50.7)
Specialty, n = 379
 Internal medicine186 (49.0)
 Surgery94 (24.8)
 SRs/statistics/epidemiology51 (13.5)
 Others48 (12.7)
Year of experience in SR/MA, mean (SD), n = 3788.6 (6.3)
  > 5 years’ experience213 (56.3)
Number of publications in SR/MA, (mean ± SD), n = 37513.6 ± 32.9
Highest impact factor of published SR/MA, n = 373
 0–234 (9.1)
 2–5128 (34.3)
 5–10124 (33.2)
 10–2049 (13.1)
  > 2038 (10.2)
Experience in data extraction for SR/MA of clinical trials, n = 384368 (95.8)
 Directly extracted339 (88.3)
 Instruct students to extract29 (7.6)
  1. The data is represented by the number and percentage (%) or the mean ± standard deviation (SD). SR/MA: systematic review and meta-analysis
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